CVE-2024-26897
Description
A flaw was found in the Linux kernel. This vulnerability affects the ath9k wireless driver in the Linux kernel, specifically used with ath9k_htc devices. The issue arises from a race condition where certain initialization processes are incomplete when the system begins handling WiFi-related events. The problem occurs because the device is exposed to the USB subsystem before the ath9k driver finishes initializing critical data structures. This can lead to NULL pointer dereferences, which cause system crashes, particularly when running specific commands or handling events during WiFi operations. A partial fix had been applied earlier to prevent one aspect of this issue, but further problems were identified. The final resolution was to delay all event handling in the ath9k_wmi_event_tasklet() function until initialization is fully complete, ensuring stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.1 | 4.7 | N/A |
| Attack Vector | Local | Local | N/A |
| Attack Complexity | High | High | N/A |
| Privileges Required | High | Low | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
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